Difference between SDLC and STLC

(Q). Explain the difference between an SDLC and STLC?

SDLC	STLC
Software Development Life Cycle.	Software Testing Life Cycle.
The main object of SDLC life cycle is to complete successful development of the software including testing and other phases.	The only objective of the STLC phase is testing.
In SDLC the business analyst gathers the requirements and create Development Plan.	In STLC, the QA team analyse requirement documents like functional and non-functional documents and create System Test Plan.
In SDLC, the development team creates the high and low-level design plans.	In STLC, the test analyst creates the system and Integration Test Plan.
SDLC defines all the standard phases which are involved during the software development process.	STLC process defines various activities to improve the quality of the product.